Advanced Materials Research Vols. 1010-1012

Abstract: Based on the environmental survey data in off-shore of Qin Huangdao from May to June 2011,correlation analysis was made between population density of Noctiluca scintillans and environmental factors. The results indicates that population density of Noctiluca scintillans does not exist linear correlation with nitrite, nitrate, ammonia, nitrogen, phosphate,dissolved oxygen and PH ,it is positive correlation with temperature and silicate noctiluca and negatively correlation with transparency and salinity.

Abstract: From the perspective of a world suffering the fog and haze weather country, haze pollution mainly concentrated in the late stage of industrialization. And squarely in this stage of our country, the Beijing-Tianjin-Hebei Area as China's "third pole", in the past two years become frequent area of the haze .For haze research relatively late in our country, so about research and governance of haze, might as well draw lessons from the foreign management haze "mountain". Joined the two sessions in 2014 in this article, some haze information has a certain timeliness. This article through to the Beijing-Tianjin-Hebei Area haze related research are analyzed, and relevant management measures are put forward.

Abstract: Oilfield development has brought important energy to people. However, it inevitably produces a variety of pollutants at the same time, which have a great effect on the ecological environment. This article analyzed the pollution sources and the pollutant influence situation on ecological environment (atmospheric environment, water environment, soil environment, natural vegetation and animal, etc.) in every stage of oilfield development, and then put forward the environment prevention and control measures. The author thinks that we should establish comprehensive environmental protection monitoring mechanism, improve environment protection technology and effective protection measures such as environmental protection law and regulation system, and implement clearer production. Furthermore, we must advocate people to protect the ecological environment and reduce environmental pollution.

Abstract: The ecological safety is actually a social project, a civilization project and a quality project, not only it needs the whole society to retrospect and reform from the following aspects as the idea, the action mode, the ethic responsibility and laws & regulations, etc. but also it needs each one of us to take part in it, implement it conscientiously and make contributions to the social civilization progress. We enjoy the ecological safety each and every one, so we should construct it together and take on our tasks and responsibilities accordingly.

Abstract: Tourist capacity and environmental capacity are significant considerations in the eco-tourism planning of wetland park for its sustainable development. Guaranteeing the quality of tourism resources and the conditions of ecological environment can obtain the best economic interest. This paper divided the study area into five areas according to the needs of the status quo and characteristics of planning and management. According to the actual situation of the wetland park, the land use index is estimated. And then the paper predicted the tourist environmental capacity of Futuan Estuary National Wetland Park based on the land usage index and square meter which will facilitate to take corresponding measures in the range of capacity and avoid overload of tourism environment.

Abstract: It is serious on the degradation of the shallow lake ecosystem at present, while the recovery of the macrophytes vegetations and the increase in water transparency have been the main contents of the ecological restoration. Using a two-variable model, we discuss the instability and sensitivity of the ecosystem to the finite-amplitude perturbations related to the initial condition with CNOP-I method. Results show that the linearly stable clear (turbid) water states can be nonlinearly unstable with the finite-amplitude perturbations. The results also demonstrate that the facilitation interactions between the submerged macrophytes and the water transparency are the main trigger for a shift from the turbid to the clear state.

Abstract: Large annual herbaceous plants such as banana (Musa spp.) have a very impressive carbon (C) storage and carbon dioxide (CO₂) sequestration in agroecosystems, and play a certain role in global C cycle, climate regulation and reducing global warming. In this paper, we systematically studied C storage on the different growth stages, CO₂ sequestration and distribution, and mathematical models for predicting CO₂ sequestration by bananas which were planted in western Hainan island, China. The results showed that C content of dry matter in different structures of banana plants was 45-50% in line with the current results, and in fruit reached the highest, in stems and roots followed, while that in leaves were the lowest. C storage in different structures of banana plants increased exponentially during banana growing process (vegetative growth and bud stage), stems were the major storage structures of C, and roots and leaves also had considerable C storage. C fixed by banana plants was mainly distributed in fruit at fruit growing stage. CO₂ sequestration was 16.3, 41.1 and 80.0t/ha at vegetative growth, bud and fruit maturity stage separately, and power function model can be applied with stem diameter (D) or composite parameter (D²H) as independent variables to predict.

Abstract: Nitrous oxide (N₂O) is a kind of important greenhouse gas,which has the potential damage on the ozone layer and people’s physical health. A series of RPSA loading metals catalysts were prepared by impregnation. The catalysts were characterized by XRD, TG-MS, NH₃-TPD, SEM method. The catalytic performance for N₂O decomposition was evaluated. Cu-based catalyst is the best activity for N₂O decomposition, T₉₅ is 540°C.

Abstract: By drip irrigation experiment of Barrel-planted peppers in a greenhouse during autumn and winter adopting Jensen Model, the water sensitivity index and water production function of green pepper at different stages is obtained through multiple linear regression method based on test datum, and the obtained model is verified by using the measured data. Further, compiling optimization program by C#.net language, drip irrigation schedule of green pepper is optimized by the genetic algorithm with the goal of maximizing the relative production. Results show that drip irrigation water of green pepper dring its whole growth period in a greenhouse in both autumn and winter is 285 mm with the highest water production efficiency. The accuracy of the results was verified by experimental data, too.

Abstract: This paper introduces the characteristics of interior space environmental in closed type architecture. The impact of closed environment on the aspects of orientation, space to guide, timing, indoor and outdoor visual contact is analyzed detailedly. Finally, the problems and principles which should be paid attention to in the design are proposed.